With unprecedented access and unsparing analysis, this is the definitive investigation into Spotify, weaving interviews with incisive cultural criticism, and illuminating how streaming has reshaped music for listeners and artists alike. Flush with testimony from over a hundred industry insiders, former Spotify employees, and musicians, Mood Machine takes us into the inner workings of the highly consolidated modern music business and how it has become personalized, playlisted, autoplayed, and algorithmic. With an expert’s eye, music journalist Liz Pelly reveals how Spotify’s two-sided marketplace—the listeners who pay with their dollars and data, and the musicians who provide the material powering it all—has changed music media forever. She also explores how musicians and listeners are coming together to fight this era of musical individualism and advocate for artists’ futures. Amazon Unbound and Weapons of Math Destruction for the music industry, Mood Machine is a timely and unputdownable exploration of a company that has become synonymous with music.